Method isReplaceable

src/main/java/net/minecraft/block/Block.java:389–392

Whether this Block can be replaced directly by other blocks (true for e.g. tall grass)

(World worldIn, BlockPos pos)

     * Whether this Block can be replaced directly by other blocks (true for e.g. tall grass)
     */
    public boolean isReplaceable(World worldIn, BlockPos pos)
    {
        return false;
    }

    /**
     * Sets how many hits it takes to break a block.